Home / 13,643,079.68-18,826,318.59-7,761,148.75

Finding the Fourth Proportional to 13,643,079.68, 18,826,318.59 and 7,761,148.75

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Solution

The fourth proportional to 13,643,079.68, 18,826,318.59 and 7,761,148.75 is: 10,709,741.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643,079.68 : 18,826,318.59 = 7,761,148.75 : x
  2. Step 2: Convert to fraction form
    13,643,079.68/18,826,318.59 = 7,761,148.75/x
  3. Step 3: Cross multiply
    13,643,079.68x = 18,826,318.59 × 7,761,148.75
  4. Step 4: Simplify right side
    13,643,079.68x = 146,113,858,986,308.84
  5. Step 5: Solve for x
    x = 146,113,858,986,308.84/13,643,079.68
  6. Step 6: Final answer
    x = 10,709,741.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.